Credits: Mr Mike Wheeler, RIL and IIMM hand book.
Unit
· 1 mile: 1.61 km
1 nautical mile/ knot: 1.85 km
· 1 acre: 63.6*63.6 m2 = 4047 m2
1 hectare: 10,000 m2
· 1 gal (us): 3.8 l
1 gal (uk): 4.5 l
1 gal = 4 quart = 8 pint = 160 fluid ounce
· 1 ton: 1016 kg
1 lb: 454 g
1 carat: .2 g for precious stone, 1/24 part of gold
Paper
· Aspect ratio: 1:root2
· A0: area of 1m2
Area of B series is geometric mean of successive A series
C: gm of A and B
· Paper density: mass per unit area
Typical office paper: 80 g/m2 , A4 sheet (1/16 m2) weighs 5g.
ISO
· ISO 9000 – Quality Management
· ISO 14000 – Environmental Management
· ISO 26000 – Social Responsibility
· ISO 31000 – Risk Management
Daylight time: clock shifted for 1 hour: US, Canada, Europe